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View Thread :: Identification queries :: Diptera (adults)
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Chloropidae or Agromyzidae in copula
#1 Print Post
Posted on 09-11-2023 12:16
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Location: Paris (France)
Posts: 1413
Joined: 21.04.05


{Click on the picture to get a better resolution. Click again to come back.}
Pierre Duhem : France : Paris : 75018 : 22/10/2023
Altitude : 70 m - Taille : 5-6 mm
Réf. : 333439

I could not find a match in the family Agromyzidae (my first choice) and somebody suggested to search in the family Chloropidae, but without result.
Can somebody give me an orientation?
Thanks in advance.
Pierre Duhem
#2 Print Post
Posted on 09-11-2023 12:53

Location: Franconia, Germany
Posts: 3339
Joined: 11.11.18

Hello Pierre, I think Agromyzidae is a good choice - I found copulating Phytomyza krygeri on the flowers of Aquilegia and they resemble yours. Maybe the flower (Crepis?) could help?
Greetings, Eric Kloeckner
#3 Print Post
Posted on 09-11-2023 17:09
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Location: Paris (France)
Posts: 1413
Joined: 21.04.05

The flower was indeed a Crepis: a bud, not yet opened.
Pierre Duhem
#4 Print Post
Posted on 09-11-2023 21:06

Location: England
Posts: 69
Joined: 20.10.12

Phytoliriomyza nigrifrons could be a possibility. This species is only known from female material. See my images of a female on my website;

If you were to see these again, please do try to collect some and I would be happy to look at them.
#5 Print Post
Posted on 10-11-2023 08:14
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Location: Paris (France)
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Joined: 21.04.05

Thanks also for this proposition.
Pierre Duhem
von Tschirnhaus
#6 Print Post
Posted on 10-11-2023 19:05

Location: Bielefeld, Germany
Posts: 429
Joined: 04.11.07

Phytoliriomyza nigrifrons (Hendel, 1920), Agromyzidae. "Barry's" identification is correct. A rare species described from Croatia, known from the Canary Islands, Azores, and UK. One of the few Agromyzidae with distinct sexual colour dimorphism as first time to be seen on the photo. Slightly elongate shape of 3rd antennal segment is typical for many Phytoliriomyza spp. Scutum (=mesonotum) black until edge of scutellum. Male genitalia are not yet figured as males are absent in collections. Further link: .
#7 Print Post
Posted on 11-11-2023 06:46
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Location: Paris (France)
Posts: 1413
Joined: 21.04.05

Thanks a lot.
Pierre Duhem
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27 February 2024 14:05


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17.08.23 15:23

17.08.23 13:54
Tony, I HAD a blank in the file name. Sorry!

17.08.23 13:44
Tony, thanks! I tried it (see "Cylindromyia" Wink but don't see the image in the post.

17.08.23 11:37
pjt - just send the post and attached image. Do not preview thread, as this will lose the link to the image,

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Tried to attach an image to a forum post. jpg, 32kB, 72dpi, no blanks, ... File name is correctly displayed, but when I click "Preview Thread" it just vanishes. Help!

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